Automotive on board computer and network control units, comprised of central processing unit, CD drive, CD ROM drive or DVD drive, AM/FM tuner, Visual display unit, Digital Signal Processor Controller chips, speed sensors, compact flash interface, IrDA (Infrared Data Association) interface, USB (Universal Serial Bus) network controller and audio amplifier, all with multimedia functions for on board vehicle diagnostics and on-line traffic and navigation information, entertainment and communication, featuring wireless voice and audio, data messaging displays, and connectivity to electronic mail and global computer networks, and accessory products for use therewith, namely, compact disc changers, VGA displays, video cameras, antennas, loudspeakers, microphones, GPS receivers with antenna, FM wireless receivers, audio receivers, telephone cradles, memory cards and navigation software CD-ROMs, and plug-in modules for voice communications, data communications, vehicle navigation, global computer network and electronic mail connectivity, and vehicle diagnostics and functionality; and parts for all the foregoing